43198666 has 64 divisors (see below), whose sum is σ = 84913920. Its totient is φ = 16035840.

The previous prime is 43198643. The next prime is 43198667. The reversal of 43198666 is 66689134.

It is a super-2 number, since 2×43198666² = 3732249488359112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43198667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185286 + ... + 185518.

It is an arithmetic number, because the mean of its divisors is an integer number (1326780).

Almost surely, 2^43198666 is an apocalyptic number.

43198666 is a deficient number, since it is larger than the sum of its proper divisors (41715254).

43198666 is a wasteful number, since it uses less digits than its factorization.

43198666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its digits is 186624, while the sum is 43.

The square root of 43198666 is about 6572.5692084603. The cubic root of 43198666 is about 350.8785168450.

The spelling of 43198666 in words is "forty-three million, one hundred ninety-eight thousand, six hundred sixty-six".